Access control applications
EST3 Installation and Service Manual 3.5
The CRCRL can be mounted inside the CRC housing when
connected to power-limited wiring. The unit includes a hook-
and-loop patch which can be attached to the CRC battery strap.
When nonpower-limited wiring is used, the CRCRL must be
mounted in a junction box.
The CRCRL is listed as an Access Control Accessory and
Control Unit Accessory.
Battery
Each CRC has space for an internal, 1.2 Ah, sealed lead-acid
battery. The battery supplies power to the CRC and its
peripherals, and provides local standby power.
The CRC battery provides 30 minutes of standby power for
access control functions and up to 4 hours for security functions.
The battery cannot be used for fire applications.
CRCXF CRC Transformer
The CRCXF CRC Transformer is a 16.5 Vac transformer that
can power the CRC or CRCXM. It provides local power for
applications requiring additional power at door lock. The CRC
has AC load terminals for easy connection to transformer.
Be sure to check the CRC installation sheet for a list of
applications that prohibit the use of the CRCXF.
Input circuits 1 and 2
Each CRC supports two input circuits for such devices as:
• Door contacts
• Motion detectors
• Request to exit (REX) switches
• Security devices
A door contact device monitors the door position (open or
closed) for various applications.
A motion detector detects a person’s approach and can be used
to unlock the door.
A request to exit (REX) push button (or bar) can be used to
manually unlock the door.
Security devices, such as glass-break detectors can be associated
with the door to enhance its security, or to monitor a nearby
window.
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